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Mon, 16 Mar 2026 08:22:23 +0000 Message-ID: <41627fc7-a0d8-44bf-982d-334f548d9f88@amd.com> Date: Mon, 16 Mar 2026 09:22:16 +0100 User-Agent: Mozilla Thunderbird Subject: Re: oops/null pointer in 0010:dma_fence_is_signaled+0x12/0x60 [amdgpu] To: "Dr. David Alan Gilbert" , alexander.deucher@amd.com, amd-gfx@lists.freedesktop.org References: Content-Language: en-US From: =?UTF-8?Q?Christian_K=C3=B6nig?= In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: BN9PR03CA0938.namprd03.prod.outlook.com (2603:10b6:408:108::13) To PH7PR12MB5685.namprd12.prod.outlook.com (2603:10b6:510:13c::22) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH7PR12MB5685:EE_|SJ0PR12MB7459:EE_ X-MS-Office365-Filtering-Correlation-Id: cb37f69a-6905-44df-a917-08de8335266b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|376014|366016|1800799024|22082099003|56012099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; 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> > 09:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Lexa PRO [Radeon 540/540X/550/550X / RX 540X/550/550X] (rev c7) > AMD Ryzen 9 3950X > > I suspect the timeout was real, and caused by a runaway llama, I forgot the > flag to stop it trying to use the GPU for image encoding; but the null page > seems unfortunate. Impressively the audio still kept playing via it: > > I have the devcoredump copied if it's of interest > (Note for self: ~/amd.core-2026-03-16) Can you open up a bug report for that and please provide what line of code amdgpu_device_gpu_recover.cold+0x244 decodes to. Thanks, Christian. > > Dave > > > Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: Dumping IP State > Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: Dumping IP State Completed > Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: [drm] AMDGPU device coredump file has been created > Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: [drm] Check your /sys/class/drm/card1/device/devcoredump/data > Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: ring gfx timeout, signaled seq=1705630, emitted seq=1705633 > Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: Process llama-mtmd-cli pid 299886 thread llama-mtmd-cli pid 299886 > Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: GPU reset begin!. Source: 1 > Mar 16 00:24:32 dalek kernel: amdgpu 0000:09:00.0: amdgpu: failed to suspend display audio > Mar 16 00:24:32 dalek kernel: amdgpu 0000:09:00.0: amdgpu: Guilty job already signaled, skipping HW reset > Mar 16 00:24:32 dalek kernel: amdgpu 0000:09:00.0: amdgpu: GPU reset(1) succeeded! > Mar 16 00:24:32 dalek kernel: amdgpu 0000:09:00.0: [drm] device wedged, but recovered through reset > Mar 16 00:24:34 dalek lightdm[40555]: ATTENTION: default value of option mesa_glthread overridden by environment. > Mar 16 00:24:34 dalek kernel: amdgpu 0000:09:00.0: amdgpu: Dumping IP State > Mar 16 00:24:34 dalek kernel: amdgpu 0000:09:00.0: amdgpu: Dumping IP State Completed > Mar 16 00:24:34 dalek kernel: amdgpu 0000:09:00.0: amdgpu: [drm] AMDGPU device coredump file has been created > Mar 16 00:24:34 dalek kernel: amdgpu 0000:09:00.0: amdgpu: [drm] Check your /sys/class/drm/card1/device/devcoredump/data > Mar 16 00:24:34 dalek kernel: amdgpu 0000:09:00.0: amdgpu: ring gfx timeout, signaled seq=1705632, emitted seq=1705637 > Mar 16 00:24:34 dalek kernel: amdgpu 0000:09:00.0: amdgpu: GPU reset begin!. Source: 1 > Mar 16 00:24:38 dalek kernel: amdgpu 0000:09:00.0: amdgpu: failed to suspend display audio > Mar 16 00:24:39 dalek kernel: BUG: kernel NULL pointer dereference, address: 0000000000000018 > Mar 16 00:24:39 dalek kernel: #PF: supervisor read access in kernel mode > Mar 16 00:24:39 dalek kernel: #PF: error_code(0x0000) - not-present page > Mar 16 00:24:39 dalek kernel: PGD 849708067 P4D 849708067 PUD 15d277067 PMD 0 > Mar 16 00:24:39 dalek kernel: Oops: Oops: 0000 [#1] SMP NOPTI > Mar 16 00:24:39 dalek kernel: CPU: 7 UID: 0 PID: 298062 Comm: kworker/u128:2 Not tainted 6.19.7-300.fc44.x86_64 #1 PREEMPT(lazy) > Mar 16 00:24:39 dalek kernel: Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./X570 Pro4, BIOS P3.10 07/13/2020 > Mar 16 00:24:39 dalek kernel: Workqueue: amdgpu-reset-dev drm_sched_job_timedout [gpu_sched] > Mar 16 00:24:39 dalek kernel: RIP: 0010:dma_fence_is_signaled+0x12/0x60 [amdgpu] > Mar 16 00:24:39 dalek kernel: Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 47 30 48 d1 e8 89 c2 83 e2 01 75 2c 48 8b> > Mar 16 00:24:39 dalek kernel: RSP: 0018:ffffcf349c553d20 EFLAGS: 00010246 > Mar 16 00:24:39 dalek kernel: RAX: 0000000000000000 RBX: ffffcf349c553da0 RCX: 0000000000000000 > Mar 16 00:24:39 dalek kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8bce4ecd4380 > Mar 16 00:24:39 dalek kernel: RBP: 0000000000000000 R08: 0000000010000020 R09: ffff8bc9c0400b68 > Mar 16 00:24:39 dalek kernel: R10: 0000000000000080 R11: ffffffffa16760a0 R12: ffff8bc9e9100000 > Mar 16 00:24:39 dalek kernel: R13: ffff8bca7ccab200 R14: 0000000000000000 R15: 0000000000000000 > Mar 16 00:24:39 dalek kernel: FS: 0000000000000000(0000) GS:ffff8bd90c066000(0000) knlGS:0000000000000000 > Mar 16 00:24:39 dalek kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > Mar 16 00:24:39 dalek kernel: CR2: 0000000000000018 CR3: 00000001c591f000 CR4: 0000000000350ef0 > Mar 16 00:24:39 dalek kernel: Call Trace: > Mar 16 00:24:39 dalek kernel: > Mar 16 00:24:39 dalek kernel: amdgpu_device_gpu_recover.cold+0x244/0x2ec [amdgpu] > Mar 16 00:24:39 dalek kernel: amdgpu_job_timedout.cold+0x218/0x258 [amdgpu] > Mar 16 00:24:39 dalek kernel: ? srso_return_thunk+0x5/0x5f > Mar 16 00:24:39 dalek kernel: drm_sched_job_timedout+0x8b/0x190 [gpu_sched] > Mar 16 00:24:39 dalek kernel: ? srso_return_thunk+0x5/0x5f > Mar 16 00:24:39 dalek kernel: process_one_work+0x190/0x350 > Mar 16 00:24:39 dalek kernel: worker_thread+0x18d/0x2f0 > Mar 16 00:24:39 dalek kernel: ? __pfx_worker_thread+0x10/0x10 > Mar 16 00:24:39 dalek kernel: kthread+0xfa/0x240 > Mar 16 00:24:39 dalek kernel: ? finish_task_switch.isra.0+0x82/0x2a0 > Mar 16 00:24:39 dalek kernel: ? __pfx_kthread+0x10/0x10 > Mar 16 00:24:39 dalek kernel: ? __pfx_kthread+0x10/0x10 > Mar 16 00:24:39 dalek kernel: ret_from_fork+0x130/0x1a0 > Mar 16 00:24:39 dalek kernel: ? __pfx_kthread+0x10/0x10 > Mar 16 00:24:39 dalek kernel: ret_from_fork_asm+0x1a/0x30 > Mar 16 00:24:39 dalek kernel: > Mar 16 00:24:39 dalek kernel: Modules linked in: dm_crypt snd_seq_dummy snd_hrtimer nft_masq nft_reject_ipv4 act_csum cls_u32 sch_htb nf_nat_tftp nf_conntr> > Mar 16 00:24:39 dalek kernel: drm_panel_backlight_quirks gpu_sched drm_suballoc_helper video drm_buddy drm_display_helper nvme nvme_core cec ghash_clmulni> > Mar 16 00:24:39 dalek kernel: CR2: 0000000000000018 > Mar 16 00:24:39 dalek kernel: ---[ end trace 0000000000000000 ]--- > Mar 16 00:24:39 dalek kernel: RIP: 0010:dma_fence_is_signaled+0x12/0x60 [amdgpu] > Mar 16 00:24:39 dalek kernel: Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 47 30 48 d1 e8 89 c2 83 e2 01 75 2c 48 8b> > Mar 16 00:24:39 dalek kernel: RSP: 0018:ffffcf349c553d20 EFLAGS: 00010246 > Mar 16 00:24:39 dalek kernel: RAX: 0000000000000000 RBX: ffffcf349c553da0 RCX: 0000000000000000 > Mar 16 00:24:39 dalek kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8bce4ecd4380 > Mar 16 00:24:39 dalek kernel: RBP: 0000000000000000 R08: 0000000010000020 R09: ffff8bc9c0400b68 > Mar 16 00:24:39 dalek kernel: R10: 0000000000000080 R11: ffffffffa16760a0 R12: ffff8bc9e9100000 > Mar 16 00:24:39 dalek kernel: R13: ffff8bca7ccab200 R14: 0000000000000000 R15: 0000000000000000 > Mar 16 00:24:39 dalek kernel: FS: 0000000000000000(0000) GS:ffff8bd90c066000(0000) knlGS:0000000000000000 > Mar 16 00:24:39 dalek kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > Mar 16 00:24:39 dalek kernel: CR2: 0000000000000018 CR3: 00000001c591f000 CR4: 0000000000350ef0 > Mar 16 00:24:39 dalek kernel: note: kworker/u128:2[298062] exited with irqs disabled > > -- > -----Open up your eyes, open up your mind, open up your code ------- > / Dr. David Alan Gilbert | Running GNU/Linux | Happy \ > \ dave @ treblig.org | | In Hex / > \ _________________________|_____ http://www.treblig.org |_______/